decide

reach, make, or come to a decision about something; "We finally decided after lengthy deliberations"

bring to an end; settle conclusively; "The case was decided"; "The judge decided the case in favor of the plaintiff"; "The father adjudicated when the sons were quarreling over their inheritance"

cause to decide; "This new development finally decided me!"

influence or determine; "The vote in New Hampshire often decides the outcome of the Presidential election"